error when using a dll in program

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hi friends. this error occur in my program when i added a dll control to my toolbox in visual studio. it do not show any line of code that it happened. and it will occur when i run program(runtime error).

i do not have any idea about it.

System.NullReferenceException was unhandled
Message=Object reference not set to an instance of an object.
Source=PersianDate
StackTrace:
at FreeControls.PersianDateTimePicker.Finalize()
InnerException:

Posted 5-Aug-14 22:04pm

_Starbug_

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Duncan Edwards Jones · Answer 1 · 2014-08-05T22:07:00

Solution 1

The control itself has an error - it is trying to dispose of some reference that it has already disposed of.

Send the error message to whoever created that control for their info - and see if they have a new version (or a work-around).

Posted 5-Aug-14 22:07pm

Duncan Edwards Jones